“You can now buy a Tesla with bitcoin,” Musk said on Twitter, implementing a plan announced in February to accept the cryptocurrency as a form of payment. Near 1310 GMT, bitcoin was up 4.3 percent at $56,802. As visitors to Tesla’s US website click through the payment options, they can now opt to transact in bitcoin. But shoppers who choose this option may be prompted to “provide us with additional information to allow us to verify your identity,” Tesla said in its “terms and conditions” section on the website.